Well... I gapped mine at .028 and still had the same issues. I had another tuner tell me go to .024 but I said **** it all and sold my COBB. Now I run sport all the time and it feels great.
Next year I will get a proper custom tune and take it to ford prior....to make sure I have the most up to date software for the engine and tranmission.
If I still have issues, I will say **** it again and just not run a tune.